🏠 What Size Wire for a 200 Amp Service in Canada?
The U.S. percentage allowance is not a Canadian service-sizing shortcut. 🇺🇸 U.S. version
The honest short answer
A Canadian 200 A service needs a Canadian service calculation and local review. This page does not publish a conductor size from the U.S. NEC or invent a Canadian equivalent.
Why the U.S. answers do not transfer
The U.S. version reconciles 2/0 copper, 3/0 copper, and 4/0 aluminum under NEC methods. Canada sizes dwelling services through its own calculated-load rules in Section 8, which this site has not verified for a headline conductor answer.
What this site can check
Use the Canadian Ampacity Check tool to test a proposed conductor against the verified ampacity table. Use the Canadian sub-panel guide for feeder work that does not supply the whole dwelling. Neither step replaces the Section 8 service calculation.
Related
Ampacity Check tool · Canadian sub-panel guide · 🇺🇸 U.S. version
200-amp service wire size FAQ for Canada
- Can you give a Canadian 200 amp service wire size?
- Not from the verified material available here. A qualified Canadian electrician or designer must apply the Section 8 load calculation and locally adopted requirements.
- Does the U.S. 83% dwelling-service rule apply in Canada?
- No. This site has not verified a matching Canadian allowance, so the U.S. percentage method is not used as a Canadian sizing rule here.